GraViz detecting images twice

[Cryaaa]

Hello,
I want to use graviz to analyse some 2D segmented image data (.tif - binary) but whenever I select a folder of files it detects double the amount of images as are in the folder. When I look at the saved labels it just runs through all images twice. I double checked the folder contents and even created some test folders where I only put 1 .tif image but it detects two when I open the folder.

[Cryaaa]

Upon further inspection it seems that line 209 below is causing the error:

GraVisGUI/SourceCode/ShapeGUI.py

Lines 201 to 210 in 89a8f09

	def select_and_show_folder(self):
	"""
	select image folder and show first image in canvas
	"""
	if self.lastDir == "":
	self.lastDir = './'
	self.directoryName = filedialog.askdirectory()
	self.fileType = "directory"
	self.fileList = [item for sublist in [glob.glob(self.directoryName + ext) for ext in ["/*.png", "/*.jpg", "/*.jpeg", "/*.tif", "/*.tiff", "/*.TIF", "/*.TIFF", "/*.ROI", "/*.roi"]] for item in sublist]
	self.fileName = self.fileList[0]

Testing the glob function locally it seems that the upper and lowercase does not matter for glob, so it's loading the tif files twice because your are looking for .tif and .TIF files. I guess the same problem would occur with the ROI files. I'm happy to make a quick PR to fix the issue.